Photochemical surface modification of poly (arylsulfone) ultrafiltration membrane and covalent immobilization of enzyme

Article type: Research Article

Authors: SONG, Hua | WU, Guang-xia | LIU, Kai

Affiliations: Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China

Note: [] Corresponding author. E-mail: [email protected]

Abstract: The sensitivity of poly (arylsulfone)(PSf) for UV irradiation in different solvents (water and ethanol) was investigated. It is confirmed that acrylic acid (AA) and acrylamide (AAm) are grafted only onto the surface of the membrane instead of the interior by FTIR and scanning electron microscope (SEM). The membrane performance (ΔJ/J_0 and contact angle θ) after photografting was studied. In the range of conditions used, the grafting yield increases with irradiation time and monomer concentration growing. After photografting and N-3-dimethyl-aminopropyl-N'-ethycarbodiimide hydrochloride (EDC) activation, PSf membrane was immobilized with hydrogen peroxide oxidoreductase, and showed a higher activity than the control membrane.

Keywords: photografting, poly (arylsulfone) ultrafiltration membrane, immobilization

Journal: Journal of Environmental Sciences, vol. 16, no. 3, pp. 392-396, 2004